Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states
Belle Collaboration
刊名PHYSICAL REVIEW D
2013
卷号88期号:1
关键词BELLE IDENTIFICATION MESON KEKB
学科分类Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.88.011102
通讯作者Shen, CP (reprint author), Beihang Univ, Beijing 100191, Peoples R China.
英文摘要Using samples of 102 million Upsilon(1S) and 158 million Upsilon(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to (KSK+)-K-0 pi(-) and charge-conjugate (c.c.) states, pi(+) pi(-) pi(0) pi(0), and pi(+) pi(-) pi(0), and to the two-body Vector-Pseudoscalar (K*(892)0 (K) over bar (0) + c.c., K*(892)K--(+) + c.c., omega pi(0), and rho pi) final states. For the first time, signals are observed in the modes Upsilon(1S) -> K-S(0) K+ pi(-) + c.c., pi(+) pi(-) pi(0) pi(0), and Upsilon(2S) -> pi(+) pi(-) pi(0) pi(0), and evidence is found for the modes Upsilon(1S) -> pi(+) pi(-) pi(0), K-*(892)(0)(K) over bar (0) + c.c., and Upsilon(2S) -> K-S(0) K+ pi(-) + c.c. Branching fractions are measured for all the processes, while 90% confidence level upper limits on the branching fractions are also set for the modes with a statistical significance of less than 3 sigma. The ratios of the branching fractions of Upsilon(2S) and Upsilon(1S) decays into the same final state are used to test a perturbative QCD prediction for Okubo-Zweig-Iizuka- suppressed bottomonium decays.
类目[WOS]Astronomy & Astrophysics ; Physics, Particles & Fields
收录类别SCI
语种英语
WOS记录号WOS:000322145600001
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213569
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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Belle Collaboration. Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states[J]. PHYSICAL REVIEW D,2013,88(1).
APA Belle Collaboration.(2013).Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states.PHYSICAL REVIEW D,88(1).
MLA Belle Collaboration."Measurement of exclusive Upsilon(1S) and Upsilon(2S) decays into vector-pseudoscalar final states".PHYSICAL REVIEW D 88.1(2013).
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